Display screen or portion thereof with transitional graphical user interface



FIG. 1 is a front view of a first embodiment showing a first image in a sequence showing a display screen or portion thereof with transitional graphical user;

FIG. 2 is a second image thereof;

FIG. 3 is a third image thereof;

FIG. 4 is a front view of a second embodiment showing a first image in a sequence showing a display screen or portion thereof with transitional graphical user;

FIG. 5 is a second image thereof;

FIG. 6 is a third image thereof;

FIG. 7 is a front view of a third embodiment showing a first image in a sequence showing a display screen or portion thereof with transitional graphical user;

FIG. 8 is a second image thereof;

FIG. 9 is a third image thereof;

FIG. 10 is a detail of FIG. 1 , shown enlarged for clarity of viewing;

FIG. 11 is a detail of FIG. 1 , shown enlarged for clarity of viewing;

FIG. 12 is a detail of FIG. 2 , shown enlarged for clarity of viewing;

FIG. 13 is a detail of FIG. 2 , shown enlarged for clarity of viewing;

FIG. 14 is a detail of FIG. 3 , shown enlarged for clarity of viewing;

FIG. 15 is a detail of FIG. 3 , shown enlarged for clarity of viewing;

FIG. 16 is a detail of FIG. 4 , shown enlarged for clarity of viewing;

FIG. 17 is a detail of FIG. 4 , shown enlarged for clarity of viewing;

FIG. 18 is a detail of FIG. 5 , shown enlarged for clarity of viewing;

FIG. 19 is a detail of FIG. 5 , shown enlarged for clarity of viewing;

FIG. 20 is a detail of FIG. 5 , shown enlarged for clarity of viewing;

FIG. 21 is a detail of FIG. 6 , shown enlarged for clarity of viewing;

FIG. 22 is a detail of FIG. 6 , shown enlarged for clarity of viewing;

FIG. 23 is a detail of FIG. 6 , shown enlarged for clarity of viewing;

FIG. 24 is a detail of FIG. 8 , shown enlarged for clarity of viewing;

FIG. 25 is a detail of FIG. 8 , shown enlarged for clarity of viewing;

FIG. 26 is a detail of FIG. 8 , shown enlarged for clarity of viewing;

FIG. 27 is a detail of FIG. 9 , shown enlarged for clarity of viewing;

FIG. 28 is a detail of FIG. 9 , shown enlarged for clarity of viewing; and,

FIG. 29 is a detail of FIG. 9 , shown enlarged for clarity of viewing.

The appearance of the transitional image sequentially transitions between the images shown in FIGS. 1-3 , FIGS. 4-6 , and FIGS. 7-9 , respectively. The process or period in which one image transitions to another image forms no part of the claimed design.

The outer even-dashed broken lines in the figures show a display screen or portion thereof and form no part of the claimed design. The other even-dashed broken lines in the figures show portions of the graphical user interface and form no part of the claimed design. The dot-dash broken lines indicate portions of the claimed design that are illustrated in enlargements and form no part of the claimed design. 

CLAIM The ornamental design for a display screen or portion thereof with transitional graphical user interface, as shown and described. 